import os
import json
from utils import Globals


class GlobalConfigManager:
    """全局配置管理器 - 所有工程使用统一配置"""
    
    CONFIG_FILE = 'Static/global_config.json'
    
    @classmethod
    def loadGlobalConfig(cls):
        """加载全局配置文件"""
        try:
            with open(cls.CONFIG_FILE, 'r', encoding='utf-8') as f:
                data = json.load(f)
                return data.get('globalConfig', cls.getDefaultConfig())
        except Exception as e:
            print(f"加载全局配置文件失败: {e}")
            return cls.getDefaultConfig()
    
    @classmethod
    def getDefaultConfig(cls):
        """获取默认配置（当配置文件不存在时使用）"""
        return {
            "name": "默认全局配置",
            "description": "所有工程统一使用的默认配置",
            "variableModules": {
                "modbusTcpMaster": True,
                "modbusTcpSlave": True,
                "modbusRtuMaster": True,
                "modbusRtuSlave": True,
                "ioModule": True,
                "tcRtdModule": True,
                "hartReadModule": True,
                "hartSimulateModule": True,
                "profibusModule": True,
                "rpcModule": True
            }
        }
    
    @classmethod
    def saveGlobalConfig(cls, config):
        """保存全局配置文件"""
        try:
            data = {"globalConfig": config}
            with open(cls.CONFIG_FILE, 'w', encoding='utf-8') as f:
                json.dump(data, f, indent=2, ensure_ascii=False)
            return True
        except Exception as e:
            print(f"保存全局配置文件失败: {e}")
            return False
    
    @classmethod
    def getModuleDisplayName(cls, moduleKey):
        """获取模块显示名称"""
        displayNames = {
            'modbusTcpMaster': 'MODBUSTCP主站',
            'modbusTcpSlave': 'MODBUSTCP从站', 
            'modbusRtuMaster': 'MODBUSRTU主站',
            'modbusRtuSlave': 'MODBUSRTU从站',
            'ioModule': 'IO模块',
            'tcRtdModule': 'TCRTD模块',
            'hartReadModule': 'HART读取模块',
            'hartSimulateModule': 'HART模拟模块',
            'profibusModule': 'PROFIBUS模块',
            'rpcModule': '远程通讯模块'
        }
        return displayNames.get(moduleKey, moduleKey)
    
    @classmethod
    def getModuleWidgetClass(cls, moduleKey):
        """获取模块对应的Widget类"""
        from UI.VarManages.VarWidget import VarWidgets, TcRtdWidgets, AnalogWidgets, HartSimulateWidgets
        from UI.HartWidgets.HartMainWindow import HartMainWindow
        from UI.VarManages.VarTable import RpcVarTableView
        from UI.ProfibusWidgets.ProfibusWindow import ProfibusWidgets
        
        widgetClasses = {
            'modbusTcpMaster': lambda: VarWidgets('ModbusTcpMaster'),
            'modbusTcpSlave': lambda: VarWidgets('ModbusTcpSlave'),
            'modbusRtuMaster': lambda: VarWidgets('ModbusRtuMaster'), 
            'modbusRtuSlave': lambda: VarWidgets('ModbusRtuSlave'),
            'ioModule': AnalogWidgets,
            'tcRtdModule': TcRtdWidgets,
            'hartReadModule': HartMainWindow,
            'hartSimulateModule': HartSimulateWidgets,
            'profibusModule': ProfibusWidgets,
            'rpcModule': RpcVarTableView
        }
        return widgetClasses.get(moduleKey)
    
    @classmethod
    def getEnabledModules(cls):
        """获取启用的模块列表"""
        config = cls.loadGlobalConfig()
        variableModules = config.get('variableModules', {})
        return [moduleKey for moduleKey, enabled in variableModules.items() if enabled]
    
    @classmethod
    def isModuleEnabled(cls, moduleKey):
        """检查模块是否启用"""
        config = cls.loadGlobalConfig()
        variableModules = config.get('variableModules', {})
        return variableModules.get(moduleKey, False)
    
    @classmethod
    def getEnabledModelTables(cls):
        """获取启用模块对应的模型表列表"""
        config = cls.loadGlobalConfig()
        variableModules = config.get('variableModules', {})
        
        # 模块与模型表的映射关系
        moduleToModelMapping = {
            'modbusTcpMaster': 'ModbusTcpMasterTable',
            'modbusTcpSlave': 'ModbusTcpSlaveTable',
            'modbusRtuMaster': 'ModbusRtuMasterTable',
            'modbusRtuSlave': 'ModbusRtuSlaveTable',
            'tcRtdModule': 'TcRtdTable',
            'ioModule': 'AnalogTable',
            'hartSimulateModule': 'HartSimulateTable'
            # 注意：userTable 不在变量管理模块中，始终需要初始化
            # hartReadModule 和 profibusModule 可能没有对应的表模型
            # rpcModule 可能也没有对应的表模型
        }
        
        enabledTables = []
        
        # 添加启用模块对应的表
        for moduleKey, enabled in variableModules.items():
            if enabled and moduleKey in moduleToModelMapping:
                enabledTables.append(moduleToModelMapping[moduleKey])
        
        # 始终添加用户表（非变量管理模块）
        enabledTables.append('userTable')
        
        return enabledTables
    
    @classmethod
    def getEnabledModelClasses(cls):
        """获取启用模块对应的数据库模型类列表"""
        from utils.DBModels.ProtocolModel import (
            ModbusTcpMasterVar, ModbusTcpSlaveVar, ModbusRtuMasterVar, ModbusRtuSlaveVar,
            HartVar, TcRtdVar, AnalogVar, HartSimulateVar
        )
        
        config = cls.loadGlobalConfig()
        variableModules = config.get('variableModules', {})
        
        # 模块与数据库模型类的映射关系
        moduleToModelClassMapping = {
            'modbusTcpMaster': ModbusTcpMasterVar,
            'modbusTcpSlave': ModbusTcpSlaveVar,
            'modbusRtuMaster': ModbusRtuMasterVar,
            'modbusRtuSlave': ModbusRtuSlaveVar,
            'hartReadModule': HartVar,
            'tcRtdModule': TcRtdVar,
            'ioModule': AnalogVar,
            'hartSimulateModule': HartSimulateVar
        }
        
        enabledModelClasses = []
        
        # 添加启用模块对应的模型类
        for moduleKey, enabled in variableModules.items():
            if enabled and moduleKey in moduleToModelClassMapping:
                enabledModelClasses.append(moduleToModelClassMapping[moduleKey])
        
        return enabledModelClasses
    
    @classmethod
    def needsTcpVarManager(cls):
        """检查是否需要初始化TCPVarManager（当启用IO或TCRTD模块时）"""
        config = cls.loadGlobalConfig()
        variableModules = config.get('variableModules', {})
        
        # TCPVarManager相关的模块
        tcpVarModules = ['ioModule', 'tcRtdModule']
        
        # 检查是否有任何相关模块被启用
        for moduleKey in tcpVarModules:
            if variableModules.get(moduleKey, False):
                return True
        
        return False